CVE-2025-68616 | THREATINT

Description

WeasyPrint helps web developers to create PDF documents. Prior to version 68.0, a server-side request forgery (SSRF) protection bypass exists in WeasyPrint's `default_url_fetcher`. The vulnerability allows attackers to access internal network resources (such as `localhost` services or cloud metadata endpoints) even when a developer has implemented a custom `url_fetcher` to block such access. This occurs because the underlying `urllib` library follows HTTP redirects automatically without re-validating the new destination against the developer's security policy. Version 68.0 contains a patch for the issue.

PUBLISHED Reserved 2025-12-19 | Published 2026-01-19 | Updated 2026-01-20 | Assigner GitHub_M

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem types

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

CWE-918: Server-Side Request Forgery (SSRF)

Product status

< 68.0

affected

References

github.com/...yPrint/security/advisories/GHSA-983w-rhvv-gwmv exploit

github.com/...yPrint/security/advisories/GHSA-983w-rhvv-gwmv

github.com/...ommit/b6a14f0f3f4ce9c0c75c1a2d73cb1c5d43f0e565

cve.org (CVE-2025-68616)

nvd.nist.gov (CVE-2025-68616)

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